(:*******************************************************:)
(: Test: K-SeqExprCast-298                               :)
(: Written by: Frans Englich                             :)
(: Date: 2007-11-22T11:31:21+01:00                       :)
(: Purpose: The xs:gMonthDay value '--04-31' represents a non-existent date. :)
(:*******************************************************:)
xs:gMonthDay("--04-31")